Some Basic Concepts Of Chemistry Question 18
Question: Given that the abundance of isotopes $ ^{54}Fe $ , $ ^{56}Fe $ and $ ^{57}Fe $ is 5%, 90% and 5%, respectively. The atomic mass of Fe is
Options:
A) 55.85
B) 55.95
C) 55.75
D) 55.05
Show Answer
Answer:
Correct Answer: B
Solution:
The atomic mass of iron is $ =\frac{(5\times 54)+(90\times 56)+(5\times 57)}{100}=55.95 $
